Paper feeding mechanism



Oct. `l, 1935. y 1 H RESCH 2,015,728

PAPER FEEDING MECHANISM -Fi1ed Aug. 15, 1951 3 sheets-sheet 2 Figa.

INVENTQR Hen/y esc /7.

om ArroRNEY Y' oef. 1,1935. H RSCH 2,015,728

y f PAPER FEEDING MECHANISM Filed Aug.. 15, 19:51 s sheets-sheet 3 lJNVENTOR BY v /ZQ/Qesb' 2% AIITORNEY Patented Oct. 1, 1935 LUNITEDSTATES `PA'rEN'lf OFFICE PAPER FEEDING MECHANISM Henry Resch, Bayonne,N. J., assignor, by'mesne assignments, to Ralph C. Coxhead Corporation,New York, N. Y., a corporation of Delaware Application August 15, 1931,Serial No. 557,236 Y 9 Claims. (Cl. 12N-127) This invention relates toimprovements in typewriting machines and more particularly to paperfeeding mechanism therefor. It is in the nature of improvements whichmay be used with the de- 6 vice illustrated in the application of FrankH.

Trego, Serial No. 399,733, filed Oct. 15, 1929.

The Varityper writing machine, inv connection with which the inventionis herein illustrated, includes .a'set of feed rollers by which a 10 Ywork sheet may be fed upwardly between a. type shuttle' at the frontthereof and a hammer at the back of the work sheet. Because of the factthat these feed rollers are located below the printing point, it. hasbeen impossible to type to l5 the bottom edge of a work sheet.

An object of the present invention is to provide means whereby the worksheet is held so that the bottom edge thereof maybe typed upon.

To this end there is provided a set of feed rollers, arranged above theprinting point, by which the work sheet 'may be fed after itleaves the Ybite of the lower feed rollers and thus present the lower edge of thework sheet to thevprinting instrumentalities.

A'feature of the invention relates to the positioning of the feedrollers so that the bite of the lower ones is in the same vertical planeextending through the bite of the upper ones and through the printingpoint, so that the work sheet may always be presented in a flatcondition to the printing instrumentalities.

Some of the features of the invention relate to the manner of supportingthe feed rollers, the means for releasing them and the means for linespacing the work sheet 4with the feed rollers.

In carrying out the invention there is provided a rack or bracket,supported on the carriage above the printing instrumentalities, and uponwhich are' supported the feed rollers. .The rack is also 40 providedwith one or more channel-shaped guides to hold the work sheet and todirect the work sheet to and away from said feed rollers.

The paper rack is pivotally supported on the carriage so that it may beswung rearwardly with the feed rollers and the paper guides thereon tolay thework sheet on an erasing shelf located behind the vertical planein which the work sheet is fed to and from the printing point. Noveldetents are provided to hold the paper rack in its various positions.

Another feature of the invention relates tol channel-shaped guides whichare formed to facilitate the insertion of a work sheet into the machinefrom the top of said guide.

carriage showing the invention applied thereto; 5

Fig. 2 is a vertical section of the carriage taken 'on the line 2-2ofrig. 1;

Fig. 3 is a side elevation of a portion of the carriage and the paperrack with the feed rollers released; 10

Fig. 4 is a. view similar to Fig. 3 showing the paper rack swung back tolay the work sheet on the erasing shelf; and

Fig. 5 is a detail sectional view taken on the line 5-5 of Fig. 3. 15Similar` characters refer to similar parts throughout the several views.

The invention is shown as applied to a Varityper writing machine whichincludes a carriage 'I having a. bar 8 by which it may travel back 20and forth, through the medium of rollers or balls 9, on a rail I0secured to the main frame II; the carriage being guided at its upper endby a bar I2, secured to end pieces I3 of the carriage.

A work sheet'l Il'may be fed up from a con- 25 taner I5 by feed rollersI6 and I1 to advance it between a printing hammer I8 and a type carreror shuttle I9. The hammer I8 is arranged behind the work-sheet and isadapted to co.- operatewith types 20 of the type shuttle I9; the 30shuttle being indexed to select the type inthe usual manner by meansincluding an actuator 2l operated by the character keys (not shown). Thework sheet may be advanced from line to line by the usual line spacingmechanism in- 35 cluding a line space wheel 22 secured to a shaft 23 towhich the feed roller I6 is secured, said shaft 23 being rotatablysupported in arms 24 secured to a shaft 25 pivotally supported in theend pieces I3 of the carriage. 40

The feed roller I6 is normally pressed against the other feed roller I1by a spring 26 which may be coiled around' the shaft 25 and acts on oneof the roller supporting arms 2l;

'I'he feed rollers may be released in the usual 45 manner by a releaselever 21, the upper end of which may swing rearwardly about the shaft23. The lower end of said release lever, which is in the form of a cam,engages a stud 28 on the end piece I3 of the carriage to carry the feedroller 50 I6 rearwardly against the 'action of the spring 26, the stud28 engaging in a notch 2`Ia of the release lever to hold the latter inits operated position.

When the bottom edge of the work sheet is about to leave thel bite ofthe feed rollers I6 and I1, a set of upper feed rollers, indicatedgenerally by the numeral 29, is brought into action as in Fig. 2. Thisset of feed rollers is supported above the printing instrumentalities,and is operable in a manner hereinafter described; the rollers of saidset being normally released, as in Fig. 3, while the work sheet is beingfed by the regular feed rollers I6 and I1. i

While the work sheet is being fed by the lower feed rollers |6 and I1,that portion thereof above the printing line may be guided by a paperrack, indicated generally by the numeral 30, which includes two end`pieces 3| secured to each other by horizontal rods or bars 32 and 33,each end piece 3| being supported on a stud, indicated generally by thenumeral 34, (Figs. 1 and 5) secured to the carriage end I3 by a nut 35threaded onto a shank 36 of the stud 34.

Supported on the bar 33 are two guides 31, one at each side of the worksheet I4. Each guide has a portion 38 bent upafrorn its side edge of thebody portion 39 to form a channel or groove 40 in which the work sheetis guided. Said guides are adjustable sidewise on the bar`26"accordingto the width of the work sheet and according to the position of thesheet lengthwise of the carriage. Each side guide is provided for thispurpose with two ears 4I bent rearwardly therefrom and embracing the bar33. Collars 42 secured to the bar 33 by screws 43 hold the end guides 31in their adjusted positions.

A web 44 of each paper guide joins the portion 38 with the body part 39.This web is of considerable length and is used to square a fresh worksheet in the machine. The usual stationary line guides 45 may be used toposition a work sheet in the machine at the printing line.

The set 29 of upper feed rollers includes two rear feed rollers 41secured to a shaft 48 rotatably supported in the end pieces 3| of thepaper supporting rack 30, the feed rollers 41 having each a metal core41a through which a set screw 41b is threaded to secure the feed rollerto the rod 48. The set 29 further includes forward feed rollers 49rotatably supported on a rod 58 secured to arms 5| by screws 52; saidarms and the rod 50 constituting a feed roller supporting frame which ispivotally supported `on shouldered screws 53 by which the rod 32 issecured to the end pieces 3| of the paper rack.

Springs 54 are provided to act on the arms 5| of the feed roller frameto press the feed rollers 49 against the rear feed rollers 41 to firmlygrip the work sheet I4. Each spring 54 is coiled around the rod 32 andone end thereof is anchored by a screw 55 threaded through a collar 56and bearing against the rod 32. This provides a means of adjusting thespring to produce the desired pressure ofthe feed rollers 49 against thefeed rollers 41. The feed rollers are held in position lengthwise of therod 5|] by collars 51 secured to the rod 58 by screws 58.

To line space the work sheet I4, by means of .the feed rollers 41 and49, there is provided, on

the rightehand end of the shaft 48, a nger wheel or knob 59 by whichsaid shaft may be rotated. The work sheet is located in line spaceposition by a ratchet wheel 60 secured to the other end of the shaft 48,said ratchet being acted upon by a spring pressed detent 6| pivotallysupported on the rod 33. v

Provision is made for inserting the work sheet into the machine bypassing it down through the side guides 31. To facilitate the entranceof the work sheet into said guides, the upper free corner 62 of each ofthe forward portions 38 is flared outwardly to provide a wide mouth atthe top of each channel 40 of the guide.

To release the upper feed rollers there is pro- 5 vided, at theright-hand end of the carriage, a lever 65 pivoted on a shouldered screw66. The upper end of thelever 65 is provided with a finger piece so thatit may be pushed rearwardly about the pivot 66 to cause the lower end61, which acts 10 as a cam, to engage the end piece 5| of the feedrroller supporting frame to swing the latter about its pivots 53 andcarry the feed rollers 49 away from the feed rollers 41 from theposition in- Fig. 2 to the position in Fig. 3. 'I'he release lever 65 is15 arrested in its operated position by a stud 68 and while in thisposition the end of the cam 61 is on, or slightly beyond, the deadcenter so that the feed rollers are locked in their released positionsagainst the action of the springs 54. To cast on 20 the feed rollers 49the release lever 65 is moved away from the stop 68; and after the endof the cam 61 moves olf the dead center the springs 54 swing the feedroller supporting frame to carry the forward feed rollers 49 against therollers 2'5 41 to grip the interposed work sheet.

An erasing shelf or table 10 is supported on the carriage overwhich theworkI sheet may be laid when an erasure is to be made. Said erasingshelf is located behind the plane in which the work 3G sheet is normallydisposed. Accordingly the paper rack 3|) may be swung rearwardly aboutits pivot 34 to the position in Fig. 4. Stops 1I and 12 on each of therack ends 3| engage a stud 13 on the carriage ends I3 to limit themovement of the 35 paper rack 30 to its active or inactive position(Figs. 3 and 4).

To hold the paper rack in its two positions there is provided on eachpivot stud 34 a resilient detent 15 having a protuberance 16 to eitheronek of two apertures 11 and 18 on the end piece 3| of the paper rack.The detent is supported on the bearing portion 19a of the stud and isheld thereon by a head 19 of said stud. The width of the bearing portionis slightly greater 45 than the combined thickness of the end piece 3|and the detent 1| so as to permit freedom of movement of the end pieceabout the stud. To prevent turning of the detent with the end piece thedetent is provided -with two ears 80 which 50 engage the opposite sidesof the rectangular head 19 of the fixed stud 34. This makes a simple andhighly eicient detent which may be readily assembled without rigidlysecuring it to another ele,

ment in the machine. Consequently it may read- 55 ily be replaced by anew one at any time if necessary.

To assist in positioning the paper guides 31 at the desired letter spaceposition on the carriage, there is provided a scale bar 85 secured totwo 60 arms 5|, of the pivoted frame which supports the feed rollers 49,by screws 86. The usual pointer 81, located at the printing position,co-operates with the scale 85 to indicate the letter space position ofthe carriage. When the paper rack is 65 swung back the scale 85 may belifted to the dotted line position to give access to the work on theerasing shelf as in Fig. 4.

Itwill be understood that although the invention may be used inconnection with ordinary 70 work sheets it may also be used forrelatively stiff cards, such as index cards, and for stiff stencils.

In some classes of work vthe upper feed rollers may be used alone whilethe lower feed rollers remain released, but where it is desired to writeengage in 40 i Cil on the upper edge and the lower edge of a work sheet,both sets of feed rollers are used to /feed it. For example, when it isdesired to type to and including the lower edge of the work sheet it isrst fed by the lower feed rollers I6, Il. Before the lower edge reachessaid feed rollers the upper feed rollers are rendered effective to gripthe work sheet after which the lower feed rollers may be released by thehandle 21 as previously described. The work sheet may then be linespaced by the finger wheel 59.

Having thus described the invention, it should be understood thatalterations and changes may be resorted to without departing from thespirit of the invention as defined in the appended claims.

I claim:-

1. In a typewriting machine, the combination of a carriage, printinginstrumentalities, two paper guides to embrace the sides of a work sheetto assist in guiding it in a flat condition downwardly to the printinginstrumentalities, feed rollers for said work sheet above the printinginstrumentalities, the bite of the feed rollers being in the plane inwhich the work sheet is guided by said guides, means to adjust the paperguides for various widths of work sheets, and means to adjust the feedrollers, accordingly, there beingan open space between the two paperguides in which the feed rollers are located.

2. In a typewriting machine, the combination of a carriage including twoend pieces, printing instrumentalities, a frame supported on saidcarriage, said frame being located above the printing instrumentalities,said frame having two end members and a cross bar extending between andsecured to said end members, a second cross bar` on said frame, feedrollers on the last mentioned cross bar, a frame pivoted on the rstmentioned frame, feed rollers on the pivoted frame to co-operate withthe first named feed rollers, side guides on the secured cross bar todirect a work sheet between the feed rollers, and pivot studs connectingsaid end members with said end pieces to piv. otally support the rstmentioned frame on said carriage to enable it to 'be swung to anineffective positionv on said carriage.

3. In a typewriting machine, the combination of a carriage, printinginstrumentalities, a frame pivoted on said carriage and extending abovethe printing point, a paper guide supported on said frame, an erasingshelf located at a lower level than the paper guide, said frame beingswingable rearwardly to carry the work sheet over the erasing shelf, anda fixed detent on the carriage to engage the pivoted frame .to hold thelatter in both of its positions.

4. In a typewritingy machine, the combination of a carriage frame,printing instrumentalities therefor, feed rollers supported on thecarriage frame, a' paper guide rack, two studs 'secured to said carriageframe to pivotally support the rack,

an erasing shelf located behind the plane in which the rack is normallyvlocated. said rack being swingable rearwardly anddownwardly about saidstuds from a normal 4vertical position to lay that portion-of the worksheet above the -feed rollers over the erasing shelf without disturbingthe position ofthe feed rollers, and a detent secured to one of saidstuds and to engage the rack to hold the llatter -in its normalposition.

i5. In `a vtypewriting machine, the combination of a carriage, printinginstrumentalities therefor, apaper guide rack, two studs secured to saidcarriage to pivotally` support the rack, an erasing shelf located behindthe plane in which the rack is normally located, said rack being 5 swungrearwardly aboutsaid studs to carry the worlr sheet over the erasingshelf, one of said studs comprising a head and a shank, and a detentsupported on the shank of said stud to engage the rack to hold thelatter in its normal position, said detent having an extension to engagethe head of the stud to prevent rotation of the detent about the stud.

6. In a typewriting machine, the combination of a carriage, printingyinstrumentalities there-` for, a paper guide rack, two studs secured tosaid carriage to pivotally support the rack, an erasing shelf locatedbehind the plane in which the rack is normally located, said rack beingswung rearwardly about said studs to carry the work sheet over theerasing shelf, the rack including two end pieces by which it issupported on said studs, each stud comprising a shank by which it may besecured to the carriage, a. bearing portion to support one of the endpieces of the rack and a square head, and a detent supported on thebearing portion of one of the studs to engage the end piece to hold therack in its normal position, said detent having two ears bent olftherefrom to engage the sides of 3o the square head of the stud toprevent rotation of the detent about the stud.

7. In a typewriting machine, the combination of a carriage, a framesecured thereto, said frame including an upper rod, a lower rod, and anintermediate rod, a feed roller on said lower rod, a frame pivoted onsaid upper rod, a feed roller on the pivoted frame to cooperate with thefirst mentioned feed roller and channel shaped guides on theintermediate rod to t around the side edges of a work sheet to directsaid work sheet into, the bite of said feed rollers.

8. In a typewriting machine, the combination of a carriage, a framesecured thereto, two paper guides adiustably mounted kon said frametowards and away from each other to accommodate different widths of worksheets, a feed roller located in the open space between said guides andmounted on said frame independently of said guides, a. U-shaped frameincluding a crossbar and two arms extending upwardly therefrom, one ateach end of said cross-bar, the U-shaped frame being pivoted at theupper ends of its arms on the first mentioned frame, a feed 'roller onsaid bar, and a spring to act on the U-shaped i at each end of Vsaidcross-bar, the U-shaped frame being pivoted at the upper ends of itsarms on the rst mentioned frame, a feed roller on said bar, a spring toact on the U-shaped frame to press the feed rollers together, said armshavingveach an extension below said rod, and a scale bar locatedbelowthe feed rollers and secured to said extensions to assist insetting the` paper guides endwise of the carriage.

HENRY RESCH.

